Autonomous system
AS11171 AUTONATION-FTLD - Autonation, Inc
Unclassified ARIN
Summary
AutoNation, Inc.
enterprise legacy
AUTONATION-FTLD belongs to AutoNation, Inc., the large US automotive retailer headquartered in Fort Lauderdale, Florida — the FTLD in the handle. This is a corporate enterprise AS, not a service provider.
What it's used for
Publishing a retailer's own public-facing systems. RIS sees 4 IPv4 prefixes covering 2,048 addresses (a 208.86.176.0/21 plus three /23 deaggregates carved out of it) and no IPv6, with exactly one observed neighbour. A single neighbour is the clearest possible enterprise signature: the AS exists so the company's own block stays routed and portable, and it carries nobody else's traffic.
Notable
Reverse DNS on the sampled address lands on fortisweb.dealercentral.net — a dealer-facing web system, on a domain AutoNation uses for its dealership operations rather than its consumer brand. That is a useful reminder that a company's routed block often carries its back-office and dealer/partner systems rather than the storefront most people associate with the name, and that the domain in the PTR need not match the brand on the door.
Interesting
Every prefix is registered to AUTONATION-PUB-BLOCK1, so the announcing party and the registrant are the same company, and the deaggregation into /23s inside its own /21 is ordinary traffic-engineering, not evidence of the space being carved up for third parties. The block name itself (PUB) suggests this is the enterprise's public block specifically, distinct from whatever it runs internally.
This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy. Source, and how to suggest an edit.
Interconnection
Peering at a glance
Internet exchanges
No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.
Transit providers
1 upstream, 0 downstream and 1 adjacent networks observed; most-used upstreams first.
| AS | Network | Paths seen |
|---|---|---|
| AS13649 | Flexential Colorado Corp. | 244 |
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-31, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 2 prefixes · 2.05K addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 2 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS11171- Registry name
- AUTONATION-FTLD
- Registrant
- Autonation, Inc
- Abuse contact
- noc@autonation.com
- Registered
- 1998-05-05
- Last changed
- 2012-03-02
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 4 with no ROA
- ROAs
- 0 authorising AS11171
- ASPA
- no ASPA record
- IRR
- 100% registered · 4 of 4 announcements
- Route objects
- 1 naming AS11171
Reputation
Classification and threat
Unclassified Not in the curated lists. Most of the ~80,000 allocated ASNs are not.
Spamhaus DROP
Not on ASN-DROP The network as a whole is not listed.
No DROP prefixes None of its announced space is on the DROP prefix list.
Spamhaus DROP ("Don't Route Or Peer") lists space and networks run by, or hijacked for, spam and cybercrime operations: 447 networks and 1,843 prefixes, as published 2026-11-01. A short, high-confidence list, so a match is worth taking seriously, and absence from it says little on its own.
FBI IC3
No IC3 indicators Nothing from the FBI IC3 feed.
IC3 threat data is alpha. Absence of an indicator is not evidence of good behaviour, only of absence from this one feed.
Elsewhere